VZFH Storm Brake / Rail Clamp (Spring Force, Hydraulic Release)

Hubner Australia proudly represents Römer Fördertechnik GmbH (RFT Germany), bringing the VZFH Storm Brake / Rail Clamp to customers across Australia and New Zealand. Designed for safety and reliability, this robust clamp helps secure cranes and rail-bound equipment—especially in high wind, power failure, or emergency conditions.

 Key Features and Benefits

  • German-made quality – As with all RFT products, the VZFH is designed and built to meet the highest safety standards.

  • Failsafe action – When power is lost, the spring-loaded clamp automatically engages, offering immediate stopping force.

  • Hydraulic release – While the spring ensures safety, a built-in hydraulic cylinder allows smooth retraction during normal operation.

  • Manual backup included – In case of hydraulic failure, a hand pump is provided as a reliable backup.

  • High holding force – The clamp can resist up to 840 kN, making it ideal for heavy-duty and high-speed cranes.

  • Smooth guided movement – Because of its roller-guided design, it moves along the rail without causing wear or drag.

  • Consistent performance over time – Thanks to its smart lever system, the clamp maintains holding strength even as jaws wear.

  • Adjustable closing speed – You can fine-tune the clamp to close in 15–25 seconds for safer operation.

  • Handles rail misalignment – Even when rails are not perfectly aligned, the VZFH continues to perform reliably (±20 mm vertical, ±25 mm lateral).

  • Sensor monitoring – Moreover, built-in limit switches track clamp status and wear, ensuring early fault detection.

 How It Works

The VZFH uses a combination of spring force and hydraulic control. In normal conditions, the hydraulic system holds the clamp open. However, if power fails, the spring mechanism closes the clamp immediately—no delay, no operator action required.

Additionally, a throttle regulates the closing speed. Built-in limit switches confirm whether the clamp is open, closed, or showing signs of wear. This provides greater confidence for maintenance planning and safe operation.

 Ideal Applications

Because of its strength and fail-safe design, the VZFH clamp is a trusted choice for:

  • Overhead and gantry cranes

  • Port handling systems and steel mill cranes

  • Rail-mounted machines exposed to high winds or outdoor environments

  • Roof structures, hall doors, and other systems that require storm protection

In particular, the VZFH is used in industries where reliable emergency braking is non-negotiable.

 Custom Options Available

To meet your specific site needs, the VZFH clamp can be configured with:

  • Alternate mounting styles

  • Special RAL paint finishes for corrosion protection

  • Modified hydraulic power units and pressure settings

  • Additional sensors or alarms for condition monitoring

  • Refurbishment kits for extending life of older clamps

Furthermore, RFT offers full overhaul services including re-bushing, new wheels, shaft repair, and coating replacement.

Why Choose Hubner Australia?

With RFT’s over 80 years in the industrial sector, Hubner Australia offers more than just products—we provide peace of mind.

  • Expert advice on choosing and sizing the correct clamp

  • Fast local delivery, helping you avoid long lead times

  • On-site support and service to make sure everything fits and functions

  • Reliable German quality, backed by experienced local support

Ultimately, our mission is to help you keep your people, equipment, and investments safe—no matter the weather.

 Contact Us Today

If you need a storm brake that performs under pressure, we’re here to help.

Phone: +61 (0)47 882 4931
Email: antony.colyn@hubner.au